JEE Main 2009 — Gravitation Question with Solution
From: AIEEE 2009
Question
The height at which the acceleration due to gravity becomes (where the acceleration due to gravity on the surface of the earth) in terms of the radius of the earth, is:
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Given that, at height h from ground the acceleration due to gravity becomes .
We know acceleration at earth surface due to gravity g =
and acceleration at height h due to gravity g' =
So =
=
=
We know acceleration at earth surface due to gravity g =
and acceleration at height h due to gravity g' =
So =
=
=
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This is a previous-year question from JEE Main 2009, covering the Gravitation chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.